2026 Forbidden Bike Co. Puritan Base

	S1	S2	S3	S4
Stack	593mm	607mm	621mm	635mm
Reach	392mm	412mm	432mm	453mm
Stack to Reach Ratio	1.51:1	1.47:1	1.44:1	1.4:1
Seat Tube Length, C-T	480mm	500mm	520mm	540mm
Top Tube Length, Effective/Horizontal HT Top	571mm	594mm	618mm	642mm
Head Tube Angle	67.75deg	67.75deg	67.75deg	67.75deg
Effective Seat Tube Angle, Unknown	73.3deg	73.3deg	73.3deg	73.3deg
Head Tube Length	110mm	125mm	140mm	155mm
Bottom Bracket Drop	71mm	71mm	71mm	71mm
Bottom Bracket Height	290mm	290mm	290mm	290mm
Chainstay Length	418mm	428mm	438mm	448mm
Chainstay Length Horizontal	411.9mm	422.1mm	432.2mm	442.3mm
Front-Center	654mm	680mm	705mm	730mm
Front-Center Horizontal	660.1mm	684.9mm	710.8mm	735.7mm
Wheelbase	1072mm	1107mm	1143mm	1178mm
Fork Offset/Rake	45mm	45mm	45mm	45mm
Fork Length (Axle-To-Crown)	460mm	460mm	460mm	460mm
Trail	99.1mm very high	99.1mm very high	99.1mm very high	99.1mm very high
Mechanical Trail	91.7mm	91.7mm	91.7mm	91.7mm
Wheel Flop	34.7mm	34.7mm	34.7mm	34.7mm
Standover Height	737mm	753mm	769mm	786mm
Tire to Pedal Spindle	123mm 170 mm cranks	149mm 170 mm cranks	174mm 170 mm cranks	199mm 170 mm cranks
Pedal Spindle to Ground Clearance	120mm 170 mm cranks	120mm 170 mm cranks	120mm 170 mm cranks	120mm 170 mm cranks

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Category Trend

Source:https://forbiddenbike.com/bikes/puritan/

Geometry